Answer: I'm pretty sure the answer is D.
Explanation: Hope this helps! Please tell me if im wrong.
The most significant contributing factor to the Steel Strike of 1919 in the US was the end of World War I, which left many of those workers who had unionized in federal unions with less opportunities for work then prior and during the war.
Answer: How Gandhi and King further Thoreau's idea of civil disobedience is by giving their followers a better model for disobedience than Thoreau.
hope this helped! c: